Question

Помогите пожалуйста решить уравнения (2,4,6)

Answer 1

2) х/18 = 7/9
9х = 18*7
9х = 126
х = 126/9
х = 14

4) 6/х = 3/7
3х = 7*6
3х = 42
х = 42/3
х = 14

6) 12/7 = 60/х
12х = 60*7
12х = 420
х = 420/12
х = 35